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Old 03-17-2017, 02:10 AM   -   Wikipost
R/C Tech Forums Thread Wiki: Xray T4 2016
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Welcome to the XRAY T4'16 Thread & Wikipost! Here you will find some useful info, tips and tricks as well as setups that are used by several team drivers. This wikipost is a work in progress and should continue to develop over time.

Tips & Tricks:

Alex Hagberg's Tech Tip Tuesday articles

How to mount your Protoform LTC-R Body
Setting static camber
How to mount weight on your chassis Part1
How to mount the rear wing on Protoform bodies
Simple troubleshooting guide
How to mount the battery on your chassis
How to glue your front tires for CRC Black carpet with Eric Anderson
Utilizing Exponential and RMode on the M12S
How to mount weight on your chassis Part2

Team driver Tim Wahl posted some very useful tips on Facebook as he worked through building a new kit.

1- Carbon Parts
2-Suspension
3-Solid Axle and Differential
4-Bulkheads & Drivetrain
5-Driveshaft (ECS & CVD)
6-Front & Rear Suspension
7-Tweak
8-Anti-Roll Bar
9-Battery Fix (OPTIONAL)
10-Bumper & Body
11-Shocks
12-Steering

New Graphite Hubs:
Xray have recently released some additional Graphite hubs for the T4 lineup. The 4° Graphite C-Hub has been out for some time and is known to improve steering on entry, and in general makes the car turn better. This has been the go-to c-hub on asphalt for many on the Xray team, though it is not needed on high bite carpet. The Graphite rear hub tends to make the car more stable, especially on corner entry. We are still working on gathering input on the new Graphite steering block, but for the moment feel that it should improve steering response. All Graphite parts are approximately 1g lighter than the Hard or Medium options.

Option Parts to consider:
XRA301196 T4 Graphite Upper Deck 1.6mm V2
XRA301226 Foam Bumper – Hard - highly recommend
XRA302165 Composite Front Suspension Arm 2-Hole – Hard
XRA302169 Composite Front Suspension Arm 1-Hole – Graphite
XRA302803 1.3mm Front Anti-Roll Bar
XRA303169 Composite Rear Suspension Arm 1-Hole – Graphite
XRA303802 1.2mm Rear Anti-Roll Bar
XRA305137 Steel Solid Axle Driveshaft Adapters - HUDY Spring Steel - highly recommend
XRA305242 Composite Drive Shaft Replacement Cap 3.5mm – Orange – Strong (QTY 4)
XRA305351 Aluminum Wheel Hub – Offset “-0.75mm” – Black (QTY 2)
XRA306191 T4 Graphite + Aluminum Fully Adjustable Battery Holder
XRA308264 4S Spring-Set Progressive C=2.5-2.8 (QTY 2)
XRA308276 4S Spring-Set C=2.7 (QTY 2)
XRA308286 4S Spring-Set C=2.6 (QTY 2)
Specific to Asphalt:
XRA302383 Composite C-Hub Right – 4* - Graphite (ECS)
XRA302384 Composite C-Hub Left – 4* - Graphite (ECS)
XRA308039 Aluminum Progressive Shock System – Set (QTY 2)

Specific to Carpet:

XRA301141 T4 Aluminum Flex Chassis 2mm
XRA302375 Composite C-Hub Right – 6* - Hard ***Modification may be required if they don't have the "ECS" stamp.

XRA302376 Composite C-Hub Left – 6* - Hard ***Modification may be required if they don't have the "ECS" stamp.

XRA303711-O Aluminum Rear Lower Suspension Holder – Front – RF
Recent Setups:
3 July 2016 - Alex Hagberg - European Championship - Asphalt - Mod - 2nd
3 July 2016 - Bruno Coelho - European Championship - Asphalt - Mod - 4th
3 July 2016 - Jan Ratheisky - European Championship - Asphalt - 13.5 - TQ + Win

29 June 2016 - Max Kuenning - Reedy - Asphalt - Mod - 4th
29 June 2016 - Keith Yu - Reedy - Asphalt - 13.5 - TQ + 2nd
29 June 2016 - Eric Anderson - Reedy - Asphalt - 13.5 - 3rd

15 May 2016 - Bruno Coelho - ETS Rd 4 Riccione - Asphalt - Mod - TQ + Win
15 May 2016 - Mattia Collina - ETS Rd 4 Riccione - Asphalt - 13.5 - Win

17 April 2016 - Max Kuenning - MHIC - Carpet - Mod - 4th

10 April 2016 - Bruno Coelho - ETS Rd 3 Wels - Carpet - Mod - 2nd
10 April 2016 - Alex Hagberg - ETS Rd 3 Wels - Carpet - Mod - 4th
10 April 2016 - Jan Ratheisky - ETS Rd 3 Wels - Carpet - 13.5 - TQ + Win

22 March 2016 - Paul LeMieux - Canadian Nats - Carpet - Mod - TQ + Win
22 March 2016 - Luke Pittman - Canadian Nats - Carpet - Mod - 3rd

6 March 2016 - Chris Adams - ROAR Nats - Carpet - Mod - TQ + Win
6 March 2016 - Craig Xavier - ROAR Nats - Carpet - 17.5 - 4th
6 March 2016 - Eric Anderson - ROAR Nats - Carpet - 17.5 - 5th

6 February 2016 - Bruno Coelho - ETS Rd 2 Koblenz - Carpet - Mod - TQ + Win
6 February 2016 - Alex Hagberg - ETS Rd 2 Koblenz - Carpet - Mod - 2nd

31 January 2016 - Alex Hagberg - Snowbirds - Carpet - Mod - TQ + Win
31 January 2016 - Jan Ratheisky - Snowbirds - Carpet - All - See Comments
31 January 2016 - Drew Ellis - Snowbirds - Carpet - 13.5 - 4th
31 January 2016 - Robbie Dodge - Snowbirds - Carpet - 17.5 - Win

13 December 2015 - Bruno Coelho - ETS Rd 1 Hrotovice - Carpet - Mod - 3rd
13 December 2015 - Alex Hagberg - ETS Rd 1 Hrotovice - Carpet - Mod - 4th
13 December 2015 - Olly Jeffries - ETS Rd 1 Hrotovice - Carpet - Mod - 7th
13 December 2015 - Jan Ratheisky - ETS Rd 1 Hrotovice - Carpet - 13.5 - TQ + Win

29 November 2015 - Paul LeMieux - US Indoor Champs - Carpet - Mod - TQ + Win

25 October 2015 - Eric Anderson - Stock Wars - Carpet - 17.5 - 2nd

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Old 07-28-2016, 11:01 AM   #856
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Though i did buy a aluminum chassis for carpet, i tend to run mine box stock with;
1.3 front bar
Xray hard bumper

Ill usually run the stock springs much of he time, occasionally using he 25-28 progressives up front but no other option parts really.
I run mod with 6200 mah packs and car is super underweight and well balanced so i never bothered with the expensive screws. With the hard aluminum however i could see the lighter parts being of benefit, but prob only for stock.
Ive tried a ton of different settings and almost always end up back at kit. Cant really argue with it.
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Old 07-28-2016, 02:40 PM   #857
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Quote:
Originally Posted by wkderf View Post
Ill also add a replacement screw kit, as out of the box Xray doesn't really supply any spare screws. Many people upgrade to the Hiro Seiko Titanium & aluminum screw kit, or there are also manufacturers who sell kits that replace every screw with a titanium option.
a lot of cars are fitted with Moody Fools ti screws,they even supply ti grub screws for droop
http://www.moodyfools.com/
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Old 07-28-2016, 04:39 PM   #858
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Quote:
Originally Posted by Dino_D View Post
What surface are you running? Carpet or outdoor asphalt.

Carpet: I would have picked up 2.6 and 2.7 springs and the progressive 2.4-2.7 and progressive 2.5-2.8 springs. One step stiffer sway bars and one step softer as well as tuning options.

Asphalt: Same springs and sway bars, but also the progressive pistons for the front.

You want to have tuning options to adjust the car.

Thanks for your reply. I'm running on a small sized track made of epoxy. I do have a couple of X-ray springs and I use the progressive springs of 2.5-2.8 on my front and 2.5 on my rear. Also, I tuned my settings such as camber, toe-out, etc. using the system setup kit.

Last edited by Kakaru; 07-28-2016 at 05:04 PM.
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Old 07-28-2016, 05:10 PM   #859
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Quote:
Originally Posted by CristianTabush View Post
RSD163 RSD 4mm Carbon Fiber Shock Towers for XRAY T4



RX4-16CF RX4 2016 2.0mm Quasi Carbon Fiber chassis for XRAY T4


Just being curious here. Why do we need such a 4mm thick tower for XRay T4 2016? In addition, I'm just wondering what is the purpose of have an upper deck for the car since the belt can work well without an upper deck (I know this is a very newbie question)? Thank you.
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Old 07-28-2016, 09:27 PM   #860
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Awesome responses, thanks guys!. As for the intial build, I've been looking at some setup sheets on petite and seeing quite a vast selection of diff oil, ranges from 3000 to 10000 this on low traction to medium traction tracks??. I see the std kit supplied it 2000, the track i'll be on is low to medium once it cleans up...any suggestions??, I'm thinking 3000k?
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Old 07-28-2016, 10:11 PM   #861
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The shock towers on a car act as a brace for the bulkheads, so a thicker one allows less bulkhead deflection which in turn makes the car "dig in" harder into the surface of the track. This combined with less flex on the tower itself allows for a car to respond quicker and have a more direct feel on high traction surfaces. Is it a need? Not particularly, it's just a tuning option.

The upper deck is necessary to keep belt tension, increase stiffness and also to prevent the car from flexing too far.
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Old 07-29-2016, 01:50 AM   #862
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Can anybody suggest a spur/pinion combo that fits the mounts for about 3-3.5
Fdr ?

Thanks
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Old 07-29-2016, 07:11 AM   #863
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A 92t spur works for fdr's in that range but a slightly smaller 88t spur will make life much easier in the low 3.x fdr range.

92/52 will get you 3.36 fdr.
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Old 07-29-2016, 05:11 PM   #864
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I apologize if it's in the thread here, but I searched and can't find what I'm looking for...so I'll ask.

6* C-Hubs for the T4'16? Are they offered with the ECS style opening? The wiki says you have to mod the old ones. Am I missing something?

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Old 07-29-2016, 05:51 PM   #865
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I think that they made a running change to the hubs so that all new C-hubs work with the ECS meaning that there is not a specific ECS version. So, all the existing part numbers should be updated to work.
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Old 07-29-2016, 06:31 PM   #866
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I think Troy is right. I haven't received any new 6* blocks for a while, but a friend had a set he recently purchased that said ECS on them.

I changed the wording in the wikipost for now. Eventually will just remove that note when it seems all old stock is gone.
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Old 07-30-2016, 08:12 PM   #867
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Quote:
Originally Posted by erchn View Post
I'd highly suggest getting a 1.3f and 1.2r roll bar and a set of the 2.5-2.8 springs for the front of your car. Finally, a 2.6 rear spring sometimes wakes the car up quite a bit, if you need something more responsive or need more grip out of the corner.

Hi Guys

Thanks for the fruitful info. For the spare items, I have a box of screws for different sizes and, front and rear belts. I may get some other spare items like C-Hubs, etc. at a later stage. As of now, I just want to know what are the must-have upgrade parts to be installed.
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Old 07-31-2016, 07:05 AM   #868
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Quote:
Originally Posted by Kakaru View Post
Hi Guys

Thanks for the fruitful info. For the spare items, I have a box of screws for different sizes and, front and rear belts. I may get some other spare items like C-Hubs, etc. at a later stage. As of now, I just want to know what are the must-have upgrade parts to be installed.
There aren't really any. The car is excellent out of the box, so other than springs to tune it the option parts really are optional.
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Old 07-31-2016, 08:23 AM   #869
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Wikipost updated to include build tips and tricks provided by Tim Wahl. Very useful info in there for any TC build.
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Old 07-31-2016, 11:32 AM   #870
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Has anybody Used this Xpert servo? Trying to decide
Between this and he Savox 1251. The Xpert has better specs but just wondering if it is as good of a brand as Savox. I always use Savox in everything and just thinking about trying somethings different.
https://www.amainhobbies.com/xpert-3...i-3431/p276597
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